岩巷“前探梁+穿铁背板”临时支护技术研究

目前煤矿井下岩巷受机械化程度低、巷道顶板岩性差等影响，无法正常使用机载临时支护时，多采用“前探梁+木背木”或打点柱进行临时支护，这两种临时支护方式存在耗时长、过程不安全、临时支护后效果差等问题。针对车集煤矿岩巷临时支护存在的问题，提出了“前探梁+穿铁背板”的临时支护方案，同时对临时支护流程进行了规范和优化。现场试验表明，“前探梁+穿铁背板”临时支护技术耗时短、临时支护过程安全、临时支护后效果可靠，相对原临时支护，该临时支护施工效率可提高一倍。“前探梁+穿铁背板”临时支护技术保障了职工安全，提高了工效，符合矿井安全高效发展要求，在煤矿岩巷施工中具有广泛的应用前景和借鉴意义。

Study on the temporary support technology of the front probe beam + the back plate through the iron in the rock roadway

At present, under the influence of low mechanization and poor rock property of roadway roof, when the temporary support cannot be used normally, the front probe beam + wood backed wood or point pillar are often used for temporary support. These two temporary support methods have such problems as long-time, unsafe process and poor effect after temporary support.In view of the problems existing in temporary support of rock roadway in Juji Coal Mine, this paper analyzes the causes of the problems, puts forward the temporary support scheme of front probe beam + through iron back plate, and standardizes and optimizes the temporary support process.The field test shows that the temporary support technology of front probe beam + through iron back plate takes a short time, the temporary support process is safe, and the effect of the temporary support is reliable. Compared with the original temporary support, the construction efficiency of the temporary support can be doubled.The temporary support technology of front probe beam + through iron back plate protects workers' safety, improves work efficiency, and meets the requirements of safe and efficient development of the mine. It has a wide application prospect and reference significance in the construction of coal mine rock roadway.